1 /* Xilinx MicroBlaze-specific support for 32-bit ELF
3 Copyright (C) 2009-2018 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
30 #include "elf/microblaze.h"
33 #define USE_RELA /* Only USE_REL is actually significant, but this is
34 here are a reminder... */
35 #define INST_WORD_SIZE 4
37 static int ro_small_data_pointer = 0;
38 static int rw_small_data_pointer = 0;
40 static reloc_howto_type * microblaze_elf_howto_table [(int) R_MICROBLAZE_max];
42 static reloc_howto_type microblaze_elf_howto_raw[] =
44 /* This reloc does nothing. */
45 HOWTO (R_MICROBLAZE_NONE, /* Type. */
47 3, /* Size (0 = byte, 1 = short, 2 = long). */
49 FALSE, /* PC_relative. */
51 complain_overflow_dont, /* Complain on overflow. */
52 NULL, /* Special Function. */
53 "R_MICROBLAZE_NONE", /* Name. */
54 FALSE, /* Partial Inplace. */
57 FALSE), /* PC relative offset? */
59 /* A standard 32 bit relocation. */
60 HOWTO (R_MICROBLAZE_32, /* Type. */
62 2, /* Size (0 = byte, 1 = short, 2 = long). */
64 FALSE, /* PC_relative. */
66 complain_overflow_bitfield, /* Complain on overflow. */
67 bfd_elf_generic_reloc,/* Special Function. */
68 "R_MICROBLAZE_32", /* Name. */
69 FALSE, /* Partial Inplace. */
71 0xffffffff, /* Dest Mask. */
72 FALSE), /* PC relative offset? */
74 /* A standard PCREL 32 bit relocation. */
75 HOWTO (R_MICROBLAZE_32_PCREL,/* Type. */
77 2, /* Size (0 = byte, 1 = short, 2 = long). */
79 TRUE, /* PC_relative. */
81 complain_overflow_bitfield, /* Complain on overflow. */
82 bfd_elf_generic_reloc,/* Special Function. */
83 "R_MICROBLAZE_32_PCREL", /* Name. */
84 TRUE, /* Partial Inplace. */
86 0xffffffff, /* Dest Mask. */
87 TRUE), /* PC relative offset? */
89 /* A 64 bit PCREL relocation. Table-entry not really used. */
90 HOWTO (R_MICROBLAZE_64_PCREL,/* Type. */
92 2, /* Size (0 = byte, 1 = short, 2 = long). */
94 TRUE, /* PC_relative. */
96 complain_overflow_dont, /* Complain on overflow. */
97 bfd_elf_generic_reloc,/* Special Function. */
98 "R_MICROBLAZE_64_PCREL", /* Name. */
99 FALSE, /* Partial Inplace. */
100 0, /* Source Mask. */
101 0x0000ffff, /* Dest Mask. */
102 TRUE), /* PC relative offset? */
104 /* The low half of a PCREL 32 bit relocation. */
105 HOWTO (R_MICROBLAZE_32_PCREL_LO, /* Type. */
107 2, /* Size (0 = byte, 1 = short, 2 = long). */
109 TRUE, /* PC_relative. */
111 complain_overflow_signed, /* Complain on overflow. */
112 bfd_elf_generic_reloc, /* Special Function. */
113 "R_MICROBLAZE_32_PCREL_LO", /* Name. */
114 FALSE, /* Partial Inplace. */
115 0, /* Source Mask. */
116 0x0000ffff, /* Dest Mask. */
117 TRUE), /* PC relative offset? */
119 /* A 64 bit relocation. Table entry not really used. */
120 HOWTO (R_MICROBLAZE_64, /* Type. */
122 2, /* Size (0 = byte, 1 = short, 2 = long). */
124 FALSE, /* PC_relative. */
126 complain_overflow_dont, /* Complain on overflow. */
127 bfd_elf_generic_reloc,/* Special Function. */
128 "R_MICROBLAZE_64", /* Name. */
129 FALSE, /* Partial Inplace. */
130 0, /* Source Mask. */
131 0x0000ffff, /* Dest Mask. */
132 FALSE), /* PC relative offset? */
134 /* The low half of a 32 bit relocation. */
135 HOWTO (R_MICROBLAZE_32_LO, /* Type. */
137 2, /* Size (0 = byte, 1 = short, 2 = long). */
139 FALSE, /* PC_relative. */
141 complain_overflow_signed, /* Complain on overflow. */
142 bfd_elf_generic_reloc,/* Special Function. */
143 "R_MICROBLAZE_32_LO", /* Name. */
144 FALSE, /* Partial Inplace. */
145 0, /* Source Mask. */
146 0x0000ffff, /* Dest Mask. */
147 FALSE), /* PC relative offset? */
149 /* Read-only small data section relocation. */
150 HOWTO (R_MICROBLAZE_SRO32, /* Type. */
152 2, /* Size (0 = byte, 1 = short, 2 = long). */
154 FALSE, /* PC_relative. */
156 complain_overflow_bitfield, /* Complain on overflow. */
157 bfd_elf_generic_reloc,/* Special Function. */
158 "R_MICROBLAZE_SRO32", /* Name. */
159 FALSE, /* Partial Inplace. */
160 0, /* Source Mask. */
161 0x0000ffff, /* Dest Mask. */
162 FALSE), /* PC relative offset? */
164 /* Read-write small data area relocation. */
165 HOWTO (R_MICROBLAZE_SRW32, /* Type. */
167 2, /* Size (0 = byte, 1 = short, 2 = long). */
169 FALSE, /* PC_relative. */
171 complain_overflow_bitfield, /* Complain on overflow. */
172 bfd_elf_generic_reloc,/* Special Function. */
173 "R_MICROBLAZE_SRW32", /* Name. */
174 FALSE, /* Partial Inplace. */
175 0, /* Source Mask. */
176 0x0000ffff, /* Dest Mask. */
177 FALSE), /* PC relative offset? */
179 /* This reloc does nothing. Used for relaxation. */
180 HOWTO (R_MICROBLAZE_64_NONE, /* Type. */
182 3, /* Size (0 = byte, 1 = short, 2 = long). */
184 TRUE, /* PC_relative. */
186 complain_overflow_dont, /* Complain on overflow. */
187 NULL, /* Special Function. */
188 "R_MICROBLAZE_64_NONE",/* Name. */
189 FALSE, /* Partial Inplace. */
190 0, /* Source Mask. */
192 FALSE), /* PC relative offset? */
194 /* Symbol Op Symbol relocation. */
195 HOWTO (R_MICROBLAZE_32_SYM_OP_SYM, /* Type. */
197 2, /* Size (0 = byte, 1 = short, 2 = long). */
199 FALSE, /* PC_relative. */
201 complain_overflow_bitfield, /* Complain on overflow. */
202 bfd_elf_generic_reloc,/* Special Function. */
203 "R_MICROBLAZE_32_SYM_OP_SYM", /* Name. */
204 FALSE, /* Partial Inplace. */
205 0, /* Source Mask. */
206 0xffffffff, /* Dest Mask. */
207 FALSE), /* PC relative offset? */
209 /* GNU extension to record C++ vtable hierarchy. */
210 HOWTO (R_MICROBLAZE_GNU_VTINHERIT, /* Type. */
212 2, /* Size (0 = byte, 1 = short, 2 = long). */
214 FALSE, /* PC_relative. */
216 complain_overflow_dont,/* Complain on overflow. */
217 NULL, /* Special Function. */
218 "R_MICROBLAZE_GNU_VTINHERIT", /* Name. */
219 FALSE, /* Partial Inplace. */
220 0, /* Source Mask. */
222 FALSE), /* PC relative offset? */
224 /* GNU extension to record C++ vtable member usage. */
225 HOWTO (R_MICROBLAZE_GNU_VTENTRY, /* Type. */
227 2, /* Size (0 = byte, 1 = short, 2 = long). */
229 FALSE, /* PC_relative. */
231 complain_overflow_dont,/* Complain on overflow. */
232 _bfd_elf_rel_vtable_reloc_fn, /* Special Function. */
233 "R_MICROBLAZE_GNU_VTENTRY", /* Name. */
234 FALSE, /* Partial Inplace. */
235 0, /* Source Mask. */
237 FALSE), /* PC relative offset? */
239 /* A 64 bit GOTPC relocation. Table-entry not really used. */
240 HOWTO (R_MICROBLAZE_GOTPC_64, /* Type. */
242 2, /* Size (0 = byte, 1 = short, 2 = long). */
244 TRUE, /* PC_relative. */
246 complain_overflow_dont, /* Complain on overflow. */
247 bfd_elf_generic_reloc, /* Special Function. */
248 "R_MICROBLAZE_GOTPC_64", /* Name. */
249 FALSE, /* Partial Inplace. */
250 0, /* Source Mask. */
251 0x0000ffff, /* Dest Mask. */
252 TRUE), /* PC relative offset? */
254 /* A 64 bit GOT relocation. Table-entry not really used. */
255 HOWTO (R_MICROBLAZE_GOT_64, /* Type. */
257 2, /* Size (0 = byte, 1 = short, 2 = long). */
259 FALSE, /* PC_relative. */
261 complain_overflow_dont, /* Complain on overflow. */
262 bfd_elf_generic_reloc,/* Special Function. */
263 "R_MICROBLAZE_GOT_64",/* Name. */
264 FALSE, /* Partial Inplace. */
265 0, /* Source Mask. */
266 0x0000ffff, /* Dest Mask. */
267 FALSE), /* PC relative offset? */
269 /* A 64 bit PLT relocation. Table-entry not really used. */
270 HOWTO (R_MICROBLAZE_PLT_64, /* Type. */
272 2, /* Size (0 = byte, 1 = short, 2 = long). */
274 TRUE, /* PC_relative. */
276 complain_overflow_dont, /* Complain on overflow. */
277 bfd_elf_generic_reloc,/* Special Function. */
278 "R_MICROBLAZE_PLT_64",/* Name. */
279 FALSE, /* Partial Inplace. */
280 0, /* Source Mask. */
281 0x0000ffff, /* Dest Mask. */
282 TRUE), /* PC relative offset? */
284 /* Table-entry not really used. */
285 HOWTO (R_MICROBLAZE_REL, /* Type. */
287 2, /* Size (0 = byte, 1 = short, 2 = long). */
289 TRUE, /* PC_relative. */
291 complain_overflow_dont, /* Complain on overflow. */
292 bfd_elf_generic_reloc,/* Special Function. */
293 "R_MICROBLAZE_REL", /* Name. */
294 FALSE, /* Partial Inplace. */
295 0, /* Source Mask. */
296 0x0000ffff, /* Dest Mask. */
297 TRUE), /* PC relative offset? */
299 /* Table-entry not really used. */
300 HOWTO (R_MICROBLAZE_JUMP_SLOT,/* Type. */
302 2, /* Size (0 = byte, 1 = short, 2 = long). */
304 TRUE, /* PC_relative. */
306 complain_overflow_dont, /* Complain on overflow. */
307 bfd_elf_generic_reloc,/* Special Function. */
308 "R_MICROBLAZE_JUMP_SLOT", /* Name. */
309 FALSE, /* Partial Inplace. */
310 0, /* Source Mask. */
311 0x0000ffff, /* Dest Mask. */
312 TRUE), /* PC relative offset? */
314 /* Table-entry not really used. */
315 HOWTO (R_MICROBLAZE_GLOB_DAT,/* Type. */
317 2, /* Size (0 = byte, 1 = short, 2 = long). */
319 TRUE, /* PC_relative. */
321 complain_overflow_dont, /* Complain on overflow. */
322 bfd_elf_generic_reloc,/* Special Function. */
323 "R_MICROBLAZE_GLOB_DAT", /* Name. */
324 FALSE, /* Partial Inplace. */
325 0, /* Source Mask. */
326 0x0000ffff, /* Dest Mask. */
327 TRUE), /* PC relative offset? */
329 /* A 64 bit GOT relative relocation. Table-entry not really used. */
330 HOWTO (R_MICROBLAZE_GOTOFF_64, /* Type. */
332 2, /* Size (0 = byte, 1 = short, 2 = long). */
334 FALSE, /* PC_relative. */
336 complain_overflow_dont, /* Complain on overflow. */
337 bfd_elf_generic_reloc,/* Special Function. */
338 "R_MICROBLAZE_GOTOFF_64", /* Name. */
339 FALSE, /* Partial Inplace. */
340 0, /* Source Mask. */
341 0x0000ffff, /* Dest Mask. */
342 FALSE), /* PC relative offset? */
344 /* A 32 bit GOT relative relocation. Table-entry not really used. */
345 HOWTO (R_MICROBLAZE_GOTOFF_32, /* Type. */
347 2, /* Size (0 = byte, 1 = short, 2 = long). */
349 FALSE, /* PC_relative. */
351 complain_overflow_dont, /* Complain on overflow. */
352 bfd_elf_generic_reloc, /* Special Function. */
353 "R_MICROBLAZE_GOTOFF_32", /* Name. */
354 FALSE, /* Partial Inplace. */
355 0, /* Source Mask. */
356 0x0000ffff, /* Dest Mask. */
357 FALSE), /* PC relative offset? */
359 /* COPY relocation. Table-entry not really used. */
360 HOWTO (R_MICROBLAZE_COPY, /* Type. */
362 2, /* Size (0 = byte, 1 = short, 2 = long). */
364 FALSE, /* PC_relative. */
366 complain_overflow_dont, /* Complain on overflow. */
367 bfd_elf_generic_reloc,/* Special Function. */
368 "R_MICROBLAZE_COPY", /* Name. */
369 FALSE, /* Partial Inplace. */
370 0, /* Source Mask. */
371 0x0000ffff, /* Dest Mask. */
372 FALSE), /* PC relative offset? */
374 /* Marker relocs for TLS. */
375 HOWTO (R_MICROBLAZE_TLS,
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 FALSE, /* pc_relative */
381 complain_overflow_dont, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_MICROBLAZE_TLS", /* name */
384 FALSE, /* partial_inplace */
386 0x0000ffff, /* dst_mask */
387 FALSE), /* pcrel_offset */
389 HOWTO (R_MICROBLAZE_TLSGD,
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_dont, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 "R_MICROBLAZE_TLSGD", /* name */
398 FALSE, /* partial_inplace */
400 0x0000ffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
403 HOWTO (R_MICROBLAZE_TLSLD,
405 2, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE, /* pc_relative */
409 complain_overflow_dont, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_MICROBLAZE_TLSLD", /* name */
412 FALSE, /* partial_inplace */
414 0x0000ffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
417 /* Computes the load module index of the load module that contains the
418 definition of its TLS sym. */
419 HOWTO (R_MICROBLAZE_TLSDTPMOD32,
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE, /* pc_relative */
425 complain_overflow_dont, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_MICROBLAZE_TLSDTPMOD32", /* name */
428 FALSE, /* partial_inplace */
430 0x0000ffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
433 /* Computes a dtv-relative displacement, the difference between the value
434 of sym+add and the base address of the thread-local storage block that
435 contains the definition of sym, minus 0x8000. Used for initializing GOT */
436 HOWTO (R_MICROBLAZE_TLSDTPREL32,
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE, /* pc_relative */
442 complain_overflow_dont, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* special_function */
444 "R_MICROBLAZE_TLSDTPREL32", /* name */
445 FALSE, /* partial_inplace */
447 0x0000ffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
450 /* Computes a dtv-relative displacement, the difference between the value
451 of sym+add and the base address of the thread-local storage block that
452 contains the definition of sym, minus 0x8000. */
453 HOWTO (R_MICROBLAZE_TLSDTPREL64,
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 FALSE, /* pc_relative */
459 complain_overflow_dont, /* complain_on_overflow */
460 bfd_elf_generic_reloc, /* special_function */
461 "R_MICROBLAZE_TLSDTPREL64", /* name */
462 FALSE, /* partial_inplace */
464 0x0000ffff, /* dst_mask */
465 FALSE), /* pcrel_offset */
467 /* Computes a tp-relative displacement, the difference between the value of
468 sym+add and the value of the thread pointer (r13). */
469 HOWTO (R_MICROBLAZE_TLSGOTTPREL32,
471 2, /* size (0 = byte, 1 = short, 2 = long) */
473 FALSE, /* pc_relative */
475 complain_overflow_dont, /* complain_on_overflow */
476 bfd_elf_generic_reloc, /* special_function */
477 "R_MICROBLAZE_TLSGOTTPREL32", /* name */
478 FALSE, /* partial_inplace */
480 0x0000ffff, /* dst_mask */
481 FALSE), /* pcrel_offset */
483 /* Computes a tp-relative displacement, the difference between the value of
484 sym+add and the value of the thread pointer (r13). */
485 HOWTO (R_MICROBLAZE_TLSTPREL32,
487 2, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE, /* pc_relative */
491 complain_overflow_dont, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_MICROBLAZE_TLSTPREL32", /* name */
494 FALSE, /* partial_inplace */
496 0x0000ffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
502 #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
505 /* Initialize the microblaze_elf_howto_table, so that linear accesses can be done. */
508 microblaze_elf_howto_init (void)
512 for (i = NUM_ELEM (microblaze_elf_howto_raw); i--;)
516 type = microblaze_elf_howto_raw[i].type;
518 BFD_ASSERT (type < NUM_ELEM (microblaze_elf_howto_table));
520 microblaze_elf_howto_table [type] = & microblaze_elf_howto_raw [i];
524 static reloc_howto_type *
525 microblaze_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
526 bfd_reloc_code_real_type code)
528 enum elf_microblaze_reloc_type microblaze_reloc = R_MICROBLAZE_NONE;
533 microblaze_reloc = R_MICROBLAZE_NONE;
535 case BFD_RELOC_MICROBLAZE_64_NONE:
536 microblaze_reloc = R_MICROBLAZE_64_NONE;
539 microblaze_reloc = R_MICROBLAZE_32;
541 /* RVA is treated the same as 32 */
543 microblaze_reloc = R_MICROBLAZE_32;
545 case BFD_RELOC_32_PCREL:
546 microblaze_reloc = R_MICROBLAZE_32_PCREL;
548 case BFD_RELOC_64_PCREL:
549 microblaze_reloc = R_MICROBLAZE_64_PCREL;
551 case BFD_RELOC_MICROBLAZE_32_LO_PCREL:
552 microblaze_reloc = R_MICROBLAZE_32_PCREL_LO;
555 microblaze_reloc = R_MICROBLAZE_64;
557 case BFD_RELOC_MICROBLAZE_32_LO:
558 microblaze_reloc = R_MICROBLAZE_32_LO;
560 case BFD_RELOC_MICROBLAZE_32_ROSDA:
561 microblaze_reloc = R_MICROBLAZE_SRO32;
563 case BFD_RELOC_MICROBLAZE_32_RWSDA:
564 microblaze_reloc = R_MICROBLAZE_SRW32;
566 case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM:
567 microblaze_reloc = R_MICROBLAZE_32_SYM_OP_SYM;
569 case BFD_RELOC_VTABLE_INHERIT:
570 microblaze_reloc = R_MICROBLAZE_GNU_VTINHERIT;
572 case BFD_RELOC_VTABLE_ENTRY:
573 microblaze_reloc = R_MICROBLAZE_GNU_VTENTRY;
575 case BFD_RELOC_MICROBLAZE_64_GOTPC:
576 microblaze_reloc = R_MICROBLAZE_GOTPC_64;
578 case BFD_RELOC_MICROBLAZE_64_GOT:
579 microblaze_reloc = R_MICROBLAZE_GOT_64;
581 case BFD_RELOC_MICROBLAZE_64_PLT:
582 microblaze_reloc = R_MICROBLAZE_PLT_64;
584 case BFD_RELOC_MICROBLAZE_64_GOTOFF:
585 microblaze_reloc = R_MICROBLAZE_GOTOFF_64;
587 case BFD_RELOC_MICROBLAZE_32_GOTOFF:
588 microblaze_reloc = R_MICROBLAZE_GOTOFF_32;
590 case BFD_RELOC_MICROBLAZE_64_TLSGD:
591 microblaze_reloc = R_MICROBLAZE_TLSGD;
593 case BFD_RELOC_MICROBLAZE_64_TLSLD:
594 microblaze_reloc = R_MICROBLAZE_TLSLD;
596 case BFD_RELOC_MICROBLAZE_32_TLSDTPREL:
597 microblaze_reloc = R_MICROBLAZE_TLSDTPREL32;
599 case BFD_RELOC_MICROBLAZE_64_TLSDTPREL:
600 microblaze_reloc = R_MICROBLAZE_TLSDTPREL64;
602 case BFD_RELOC_MICROBLAZE_32_TLSDTPMOD:
603 microblaze_reloc = R_MICROBLAZE_TLSDTPMOD32;
605 case BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL:
606 microblaze_reloc = R_MICROBLAZE_TLSGOTTPREL32;
608 case BFD_RELOC_MICROBLAZE_64_TLSTPREL:
609 microblaze_reloc = R_MICROBLAZE_TLSTPREL32;
611 case BFD_RELOC_MICROBLAZE_COPY:
612 microblaze_reloc = R_MICROBLAZE_COPY;
615 return (reloc_howto_type *) NULL;
618 if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
619 /* Initialize howto table if needed. */
620 microblaze_elf_howto_init ();
622 return microblaze_elf_howto_table [(int) microblaze_reloc];
625 static reloc_howto_type *
626 microblaze_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
631 for (i = 0; i < NUM_ELEM (microblaze_elf_howto_raw); i++)
632 if (microblaze_elf_howto_raw[i].name != NULL
633 && strcasecmp (microblaze_elf_howto_raw[i].name, r_name) == 0)
634 return µblaze_elf_howto_raw[i];
639 /* Set the howto pointer for a RCE ELF reloc. */
642 microblaze_elf_info_to_howto (bfd * abfd,
644 Elf_Internal_Rela * dst)
648 if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
649 /* Initialize howto table if needed. */
650 microblaze_elf_howto_init ();
652 r_type = ELF32_R_TYPE (dst->r_info);
653 if (r_type >= R_MICROBLAZE_max)
655 /* xgettext:c-format */
656 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
658 bfd_set_error (bfd_error_bad_value);
659 r_type = R_MICROBLAZE_NONE;
662 cache_ptr->howto = microblaze_elf_howto_table [r_type];
665 /* Microblaze ELF local labels start with 'L.' or '$L', not '.L'. */
668 microblaze_elf_is_local_label_name (bfd *abfd, const char *name)
670 if (name[0] == 'L' && name[1] == '.')
673 if (name[0] == '$' && name[1] == 'L')
676 /* With gcc, the labels go back to starting with '.', so we accept
677 the generic ELF local label syntax as well. */
678 return _bfd_elf_is_local_label_name (abfd, name);
681 /* ELF linker hash entry. */
683 struct elf32_mb_link_hash_entry
685 struct elf_link_hash_entry elf;
687 /* Track dynamic relocs copied for this symbol. */
688 struct elf_dyn_relocs *dyn_relocs;
690 /* TLS Reference Types for the symbol; Updated by check_relocs */
691 #define TLS_GD 1 /* GD reloc. */
692 #define TLS_LD 2 /* LD reloc. */
693 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
694 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
695 #define TLS_TLS 16 /* Any TLS reloc. */
696 unsigned char tls_mask;
700 #define IS_TLS_GD(x) (x == (TLS_TLS | TLS_GD))
701 #define IS_TLS_LD(x) (x == (TLS_TLS | TLS_LD))
702 #define IS_TLS_DTPREL(x) (x == (TLS_TLS | TLS_DTPREL))
703 #define IS_TLS_NONE(x) (x == 0)
705 #define elf32_mb_hash_entry(ent) ((struct elf32_mb_link_hash_entry *)(ent))
707 /* ELF linker hash table. */
709 struct elf32_mb_link_hash_table
711 struct elf_link_hash_table elf;
713 /* Small local sym to section mapping cache. */
714 struct sym_cache sym_sec;
716 /* TLS Local Dynamic GOT Entry */
718 bfd_signed_vma refcount;
723 /* Nonzero if this section has TLS related relocations. */
724 #define has_tls_reloc sec_flg0
726 /* Get the ELF linker hash table from a link_info structure. */
728 #define elf32_mb_hash_table(p) \
729 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
730 == MICROBLAZE_ELF_DATA ? ((struct elf32_mb_link_hash_table *) ((p)->hash)) : NULL)
732 /* Create an entry in a microblaze ELF linker hash table. */
734 static struct bfd_hash_entry *
735 link_hash_newfunc (struct bfd_hash_entry *entry,
736 struct bfd_hash_table *table,
739 /* Allocate the structure if it has not already been allocated by a
743 entry = bfd_hash_allocate (table,
744 sizeof (struct elf32_mb_link_hash_entry));
749 /* Call the allocation method of the superclass. */
750 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
753 struct elf32_mb_link_hash_entry *eh;
755 eh = (struct elf32_mb_link_hash_entry *) entry;
756 eh->dyn_relocs = NULL;
763 /* Create a mb ELF linker hash table. */
765 static struct bfd_link_hash_table *
766 microblaze_elf_link_hash_table_create (bfd *abfd)
768 struct elf32_mb_link_hash_table *ret;
769 bfd_size_type amt = sizeof (struct elf32_mb_link_hash_table);
771 ret = (struct elf32_mb_link_hash_table *) bfd_zmalloc (amt);
775 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
776 sizeof (struct elf32_mb_link_hash_entry),
777 MICROBLAZE_ELF_DATA))
783 return &ret->elf.root;
786 /* Set the values of the small data pointers. */
789 microblaze_elf_final_sdp (struct bfd_link_info *info)
791 struct bfd_link_hash_entry *h;
793 h = bfd_link_hash_lookup (info->hash, RO_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
794 if (h != (struct bfd_link_hash_entry *) NULL
795 && h->type == bfd_link_hash_defined)
796 ro_small_data_pointer = (h->u.def.value
797 + h->u.def.section->output_section->vma
798 + h->u.def.section->output_offset);
800 h = bfd_link_hash_lookup (info->hash, RW_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
801 if (h != (struct bfd_link_hash_entry *) NULL
802 && h->type == bfd_link_hash_defined)
803 rw_small_data_pointer = (h->u.def.value
804 + h->u.def.section->output_section->vma
805 + h->u.def.section->output_offset);
809 dtprel_base (struct bfd_link_info *info)
811 /* If tls_sec is NULL, we should have signalled an error already. */
812 if (elf_hash_table (info)->tls_sec == NULL)
814 return elf_hash_table (info)->tls_sec->vma;
817 /* The size of the thread control block. */
820 /* Output a simple dynamic relocation into SRELOC. */
823 microblaze_elf_output_dynamic_relocation (bfd *output_bfd,
825 unsigned long reloc_index,
832 Elf_Internal_Rela rel;
834 rel.r_info = ELF32_R_INFO (indx, r_type);
835 rel.r_offset = offset;
836 rel.r_addend = addend;
838 bfd_elf32_swap_reloca_out (output_bfd, &rel,
839 (sreloc->contents + reloc_index * sizeof (Elf32_External_Rela)));
842 /* This code is taken from elf32-m32r.c
843 There is some attempt to make this function usable for many architectures,
844 both USE_REL and USE_RELA ['twould be nice if such a critter existed],
845 if only to serve as a learning tool.
847 The RELOCATE_SECTION function is called by the new ELF backend linker
848 to handle the relocations for a section.
850 The relocs are always passed as Rela structures; if the section
851 actually uses Rel structures, the r_addend field will always be
854 This function is responsible for adjust the section contents as
855 necessary, and (if using Rela relocs and generating a
856 relocatable output file) adjusting the reloc addend as
859 This function does not have to worry about setting the reloc
860 address or the reloc symbol index.
862 LOCAL_SYMS is a pointer to the swapped in local symbols.
864 LOCAL_SECTIONS is an array giving the section in the input file
865 corresponding to the st_shndx field of each local symbol.
867 The global hash table entry for the global symbols can be found
868 via elf_sym_hashes (input_bfd).
870 When generating relocatable output, this function must handle
871 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
872 going to be the section symbol corresponding to the output
873 section, which means that the addend must be adjusted
877 microblaze_elf_relocate_section (bfd *output_bfd,
878 struct bfd_link_info *info,
880 asection *input_section,
882 Elf_Internal_Rela *relocs,
883 Elf_Internal_Sym *local_syms,
884 asection **local_sections)
886 struct elf32_mb_link_hash_table *htab;
887 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
888 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
889 Elf_Internal_Rela *rel, *relend;
890 int endian = (bfd_little_endian (output_bfd)) ? 0 : 2;
891 /* Assume success. */
892 bfd_boolean ret = TRUE;
894 bfd_vma *local_got_offsets;
895 unsigned int tls_type;
897 if (!microblaze_elf_howto_table[R_MICROBLAZE_max-1])
898 microblaze_elf_howto_init ();
900 htab = elf32_mb_hash_table (info);
904 local_got_offsets = elf_local_got_offsets (input_bfd);
906 sreloc = elf_section_data (input_section)->sreloc;
909 relend = relocs + input_section->reloc_count;
910 for (; rel < relend; rel++)
913 reloc_howto_type *howto;
914 unsigned long r_symndx;
915 bfd_vma addend = rel->r_addend;
916 bfd_vma offset = rel->r_offset;
917 struct elf_link_hash_entry *h;
918 Elf_Internal_Sym *sym;
920 const char *sym_name;
921 bfd_reloc_status_type r = bfd_reloc_ok;
922 const char *errmsg = NULL;
923 bfd_boolean unresolved_reloc = FALSE;
926 r_type = ELF32_R_TYPE (rel->r_info);
929 if (r_type < 0 || r_type >= (int) R_MICROBLAZE_max)
931 /* xgettext:c-format */
932 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
933 input_bfd, (int) r_type);
934 bfd_set_error (bfd_error_bad_value);
939 howto = microblaze_elf_howto_table[r_type];
940 r_symndx = ELF32_R_SYM (rel->r_info);
942 if (bfd_link_relocatable (info))
944 /* This is a relocatable link. We don't have to change
945 anything, unless the reloc is against a section symbol,
946 in which case we have to adjust according to where the
947 section symbol winds up in the output section. */
949 if (r_symndx >= symtab_hdr->sh_info)
950 /* External symbol. */
954 sym = local_syms + r_symndx;
955 sym_name = "<local symbol>";
956 /* STT_SECTION: symbol is associated with a section. */
957 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
958 /* Symbol isn't associated with a section. Nothing to do. */
961 sec = local_sections[r_symndx];
962 addend += sec->output_offset + sym->st_value;
964 /* This can't be done for USE_REL because it doesn't mean anything
965 and elf_link_input_bfd asserts this stays zero. */
966 /* rel->r_addend = addend; */
970 /* Addends are stored with relocs. We're done. */
973 /* If partial_inplace, we need to store any additional addend
974 back in the section. */
975 if (!howto->partial_inplace)
977 /* ??? Here is a nice place to call a special_function like handler. */
978 r = _bfd_relocate_contents (howto, input_bfd, addend,
985 bfd_boolean resolved_to_zero;
987 /* This is a final link. */
990 unresolved_reloc = FALSE;
992 if (r_symndx < symtab_hdr->sh_info)
995 sym = local_syms + r_symndx;
996 sec = local_sections[r_symndx];
999 sym_name = "<local symbol>";
1000 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1001 /* r_addend may have changed if the reference section was
1003 addend = rel->r_addend;
1007 /* External symbol. */
1008 bfd_boolean warned ATTRIBUTE_UNUSED;
1009 bfd_boolean ignored ATTRIBUTE_UNUSED;
1011 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1012 r_symndx, symtab_hdr, sym_hashes,
1014 unresolved_reloc, warned, ignored);
1015 sym_name = h->root.root.string;
1018 /* Sanity check the address. */
1019 if (offset > bfd_get_section_limit (input_bfd, input_section))
1021 r = bfd_reloc_outofrange;
1025 resolved_to_zero = (h != NULL
1026 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
1028 switch ((int) r_type)
1030 case (int) R_MICROBLAZE_SRO32 :
1034 /* Only relocate if the symbol is defined. */
1037 name = bfd_get_section_name (sec->owner, sec);
1039 if (strcmp (name, ".sdata2") == 0
1040 || strcmp (name, ".sbss2") == 0)
1042 if (ro_small_data_pointer == 0)
1043 microblaze_elf_final_sdp (info);
1044 if (ro_small_data_pointer == 0)
1047 r = bfd_reloc_undefined;
1051 /* At this point `relocation' contains the object's
1053 relocation -= ro_small_data_pointer;
1054 /* Now it contains the offset from _SDA2_BASE_. */
1055 r = _bfd_final_link_relocate (howto, input_bfd,
1058 relocation, addend);
1063 /* xgettext:c-format */
1064 (_("%pB: The target (%s) of an %s relocation"
1065 " is in the wrong section (%pA)"),
1068 microblaze_elf_howto_table[(int) r_type]->name,
1070 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1078 case (int) R_MICROBLAZE_SRW32 :
1082 /* Only relocate if the symbol is defined. */
1085 name = bfd_get_section_name (sec->owner, sec);
1087 if (strcmp (name, ".sdata") == 0
1088 || strcmp (name, ".sbss") == 0)
1090 if (rw_small_data_pointer == 0)
1091 microblaze_elf_final_sdp (info);
1092 if (rw_small_data_pointer == 0)
1095 r = bfd_reloc_undefined;
1099 /* At this point `relocation' contains the object's
1101 relocation -= rw_small_data_pointer;
1102 /* Now it contains the offset from _SDA_BASE_. */
1103 r = _bfd_final_link_relocate (howto, input_bfd,
1106 relocation, addend);
1111 /* xgettext:c-format */
1112 (_("%pB: The target (%s) of an %s relocation"
1113 " is in the wrong section (%pA)"),
1116 microblaze_elf_howto_table[(int) r_type]->name,
1118 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1126 case (int) R_MICROBLAZE_32_SYM_OP_SYM:
1127 break; /* Do nothing. */
1129 case (int) R_MICROBLAZE_GOTPC_64:
1130 relocation = (htab->elf.sgotplt->output_section->vma
1131 + htab->elf.sgotplt->output_offset);
1132 relocation -= (input_section->output_section->vma
1133 + input_section->output_offset
1134 + offset + INST_WORD_SIZE);
1135 relocation += addend;
1136 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1137 contents + offset + endian);
1138 bfd_put_16 (input_bfd, relocation & 0xffff,
1139 contents + offset + endian + INST_WORD_SIZE);
1142 case (int) R_MICROBLAZE_PLT_64:
1145 if (htab->elf.splt != NULL && h != NULL
1146 && h->plt.offset != (bfd_vma) -1)
1148 relocation = (htab->elf.splt->output_section->vma
1149 + htab->elf.splt->output_offset
1151 unresolved_reloc = FALSE;
1152 immediate = relocation - (input_section->output_section->vma
1153 + input_section->output_offset
1154 + offset + INST_WORD_SIZE);
1155 bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
1156 contents + offset + endian);
1157 bfd_put_16 (input_bfd, immediate & 0xffff,
1158 contents + offset + endian + INST_WORD_SIZE);
1162 relocation -= (input_section->output_section->vma
1163 + input_section->output_offset
1164 + offset + INST_WORD_SIZE);
1165 immediate = relocation;
1166 bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
1167 contents + offset + endian);
1168 bfd_put_16 (input_bfd, immediate & 0xffff,
1169 contents + offset + endian + INST_WORD_SIZE);
1174 case (int) R_MICROBLAZE_TLSGD:
1175 tls_type = (TLS_TLS | TLS_GD);
1177 case (int) R_MICROBLAZE_TLSLD:
1178 tls_type = (TLS_TLS | TLS_LD);
1181 case (int) R_MICROBLAZE_GOT_64:
1186 bfd_vma static_value;
1188 bfd_boolean need_relocs = FALSE;
1189 if (htab->elf.sgot == NULL)
1195 /* 1. Identify GOT Offset;
1196 2. Compute Static Values
1197 3. Process Module Id, Process Offset
1198 4. Fixup Relocation with GOT offset value. */
1200 /* 1. Determine GOT Offset to use : TLS_LD, global, local */
1201 if (IS_TLS_LD (tls_type))
1202 offp = &htab->tlsld_got.offset;
1205 if (htab->elf.sgotplt != NULL
1206 && h->got.offset != (bfd_vma) -1)
1207 offp = &h->got.offset;
1213 if (local_got_offsets == NULL)
1215 offp = &local_got_offsets[r_symndx];
1224 if (IS_TLS_LD(tls_type) || IS_TLS_GD(tls_type))
1227 /* Symbol index to use for relocs */
1231 elf_hash_table (info)->dynamic_sections_created;
1233 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
1234 bfd_link_pic (info),
1236 && (!bfd_link_pic (info)
1237 || !SYMBOL_REFERENCES_LOCAL (info, h)))
1241 /* Need to generate relocs ? */
1242 if ((bfd_link_pic (info) || indx != 0)
1244 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1245 && !resolved_to_zero)
1246 || h->root.type != bfd_link_hash_undefweak))
1249 /* 2. Compute/Emit Static value of r-expression */
1250 static_value = relocation + addend;
1252 /* 3. Process module-id and offset */
1253 if (! ((*offp) & 1) )
1257 got_offset = (htab->elf.sgot->output_section->vma
1258 + htab->elf.sgot->output_offset
1261 /* Process module-id */
1262 if (IS_TLS_LD(tls_type))
1264 if (! bfd_link_pic (info))
1265 bfd_put_32 (output_bfd, 1,
1266 htab->elf.sgot->contents + off);
1268 microblaze_elf_output_dynamic_relocation
1271 htab->elf.srelgot->reloc_count++,
1272 /* symindex= */ 0, R_MICROBLAZE_TLSDTPMOD32,
1275 else if (IS_TLS_GD(tls_type))
1278 bfd_put_32 (output_bfd, 1,
1279 htab->elf.sgot->contents + off);
1281 microblaze_elf_output_dynamic_relocation
1284 htab->elf.srelgot->reloc_count++,
1285 /* symindex= */ indx, R_MICROBLAZE_TLSDTPMOD32,
1286 got_offset, indx ? 0 : static_value);
1289 /* Process Offset */
1290 if (htab->elf.srelgot == NULL)
1293 got_offset = (htab->elf.sgot->output_section->vma
1294 + htab->elf.sgot->output_offset
1296 if (IS_TLS_LD(tls_type))
1298 /* For LD, offset should be 0 */
1300 bfd_put_32 (output_bfd, 0,
1301 htab->elf.sgot->contents + off2);
1303 else if (IS_TLS_GD(tls_type))
1306 static_value -= dtprel_base(info);
1308 microblaze_elf_output_dynamic_relocation
1311 htab->elf.srelgot->reloc_count++,
1312 /* symindex= */ indx, R_MICROBLAZE_TLSDTPREL32,
1313 got_offset, indx ? 0 : static_value);
1315 bfd_put_32 (output_bfd, static_value,
1316 htab->elf.sgot->contents + off2);
1320 bfd_put_32 (output_bfd, static_value,
1321 htab->elf.sgot->contents + off2);
1323 /* Relocs for dyn symbols generated by
1324 finish_dynamic_symbols */
1325 if (bfd_link_pic (info) && h == NULL)
1328 microblaze_elf_output_dynamic_relocation
1331 htab->elf.srelgot->reloc_count++,
1332 /* symindex= */ indx, R_MICROBLAZE_REL,
1333 got_offset, static_value);
1338 /* 4. Fixup Relocation with GOT offset value
1339 Compute relative address of GOT entry for applying
1340 the current relocation */
1341 relocation = htab->elf.sgot->output_section->vma
1342 + htab->elf.sgot->output_offset
1344 - htab->elf.sgotplt->output_section->vma
1345 - htab->elf.sgotplt->output_offset;
1347 /* Apply Current Relocation */
1348 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1349 contents + offset + endian);
1350 bfd_put_16 (input_bfd, relocation & 0xffff,
1351 contents + offset + endian + INST_WORD_SIZE);
1353 unresolved_reloc = FALSE;
1357 case (int) R_MICROBLAZE_GOTOFF_64:
1360 unsigned short lo, high;
1361 relocation += addend;
1362 relocation -= (htab->elf.sgotplt->output_section->vma
1363 + htab->elf.sgotplt->output_offset);
1364 /* Write this value into correct location. */
1365 immediate = relocation;
1366 lo = immediate & 0x0000ffff;
1367 high = (immediate >> 16) & 0x0000ffff;
1368 bfd_put_16 (input_bfd, high, contents + offset + endian);
1369 bfd_put_16 (input_bfd, lo,
1370 contents + offset + INST_WORD_SIZE + endian);
1374 case (int) R_MICROBLAZE_GOTOFF_32:
1376 relocation += addend;
1377 relocation -= (htab->elf.sgotplt->output_section->vma
1378 + htab->elf.sgotplt->output_offset);
1379 /* Write this value into correct location. */
1380 bfd_put_32 (input_bfd, relocation, contents + offset);
1384 case (int) R_MICROBLAZE_TLSDTPREL64:
1385 relocation += addend;
1386 relocation -= dtprel_base(info);
1387 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1388 contents + offset + 2);
1389 bfd_put_16 (input_bfd, relocation & 0xffff,
1390 contents + offset + 2 + INST_WORD_SIZE);
1392 case (int) R_MICROBLAZE_64_PCREL :
1393 case (int) R_MICROBLAZE_64:
1394 case (int) R_MICROBLAZE_32:
1396 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1397 from removed linkonce sections, or sections discarded by
1399 if (r_symndx == STN_UNDEF || (input_section->flags & SEC_ALLOC) == 0)
1401 relocation += addend;
1402 if (r_type == R_MICROBLAZE_32)
1403 bfd_put_32 (input_bfd, relocation, contents + offset);
1406 if (r_type == R_MICROBLAZE_64_PCREL)
1407 relocation -= (input_section->output_section->vma
1408 + input_section->output_offset
1409 + offset + INST_WORD_SIZE);
1410 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1411 contents + offset + endian);
1412 bfd_put_16 (input_bfd, relocation & 0xffff,
1413 contents + offset + endian + INST_WORD_SIZE);
1418 if ((bfd_link_pic (info)
1420 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1421 && !resolved_to_zero)
1422 || h->root.type != bfd_link_hash_undefweak)
1423 && (!howto->pc_relative
1427 || !h->def_regular))))
1428 || (!bfd_link_pic (info)
1434 || h->root.type == bfd_link_hash_undefweak
1435 || h->root.type == bfd_link_hash_undefined)))
1437 Elf_Internal_Rela outrel;
1441 /* When generating a shared object, these relocations
1442 are copied into the output file to be resolved at run
1445 BFD_ASSERT (sreloc != NULL);
1450 _bfd_elf_section_offset (output_bfd, info, input_section,
1452 if (outrel.r_offset == (bfd_vma) -1)
1454 else if (outrel.r_offset == (bfd_vma) -2)
1456 outrel.r_offset += (input_section->output_section->vma
1457 + input_section->output_offset);
1460 memset (&outrel, 0, sizeof outrel);
1461 /* h->dynindx may be -1 if the symbol was marked to
1464 && ((! info->symbolic && h->dynindx != -1)
1465 || !h->def_regular))
1467 BFD_ASSERT (h->dynindx != -1);
1468 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1469 outrel.r_addend = addend;
1473 if (r_type == R_MICROBLAZE_32)
1475 outrel.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL);
1476 outrel.r_addend = relocation + addend;
1482 (_("%pB: probably compiled without -fPIC?"),
1484 bfd_set_error (bfd_error_bad_value);
1489 loc = sreloc->contents;
1490 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1491 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1496 relocation += addend;
1497 if (r_type == R_MICROBLAZE_32)
1498 bfd_put_32 (input_bfd, relocation, contents + offset);
1501 if (r_type == R_MICROBLAZE_64_PCREL)
1502 relocation -= (input_section->output_section->vma
1503 + input_section->output_offset
1504 + offset + INST_WORD_SIZE);
1505 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1506 contents + offset + endian);
1507 bfd_put_16 (input_bfd, relocation & 0xffff,
1508 contents + offset + endian + INST_WORD_SIZE);
1515 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1517 relocation, addend);
1524 if (r != bfd_reloc_ok)
1526 /* FIXME: This should be generic enough to go in a utility. */
1530 name = h->root.root.string;
1533 name = (bfd_elf_string_from_elf_section
1534 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1535 if (name == NULL || *name == '\0')
1536 name = bfd_section_name (input_bfd, sec);
1544 case bfd_reloc_overflow:
1545 (*info->callbacks->reloc_overflow)
1546 (info, (h ? &h->root : NULL), name, howto->name,
1547 (bfd_vma) 0, input_bfd, input_section, offset);
1550 case bfd_reloc_undefined:
1551 (*info->callbacks->undefined_symbol)
1552 (info, name, input_bfd, input_section, offset, TRUE);
1555 case bfd_reloc_outofrange:
1556 errmsg = _("internal error: out of range error");
1559 case bfd_reloc_notsupported:
1560 errmsg = _("internal error: unsupported relocation error");
1563 case bfd_reloc_dangerous:
1564 errmsg = _("internal error: dangerous error");
1568 errmsg = _("internal error: unknown error");
1571 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
1572 input_section, offset);
1581 /* Calculate fixup value for reference. */
1584 calc_fixup (bfd_vma start, bfd_vma size, asection *sec)
1586 bfd_vma end = start + size;
1589 if (sec == NULL || sec->relax == NULL)
1592 /* Look for addr in relax table, total fixup value. */
1593 for (i = 0; i < sec->relax_count; i++)
1595 if (end <= sec->relax[i].addr)
1597 if ((end != start) && (start > sec->relax[i].addr))
1599 fixup += sec->relax[i].size;
1604 /* Read-modify-write into the bfd, an immediate value into appropriate fields of
1605 a 32-bit instruction. */
1607 microblaze_bfd_write_imm_value_32 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val)
1609 unsigned long instr = bfd_get_32 (abfd, bfd_addr);
1610 instr &= ~0x0000ffff;
1611 instr |= (val & 0x0000ffff);
1612 bfd_put_32 (abfd, instr, bfd_addr);
1615 /* Read-modify-write into the bfd, an immediate value into appropriate fields of
1616 two consecutive 32-bit instructions. */
1618 microblaze_bfd_write_imm_value_64 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val)
1620 unsigned long instr_hi;
1621 unsigned long instr_lo;
1623 instr_hi = bfd_get_32 (abfd, bfd_addr);
1624 instr_hi &= ~0x0000ffff;
1625 instr_hi |= ((val >> 16) & 0x0000ffff);
1626 bfd_put_32 (abfd, instr_hi, bfd_addr);
1628 instr_lo = bfd_get_32 (abfd, bfd_addr + INST_WORD_SIZE);
1629 instr_lo &= ~0x0000ffff;
1630 instr_lo |= (val & 0x0000ffff);
1631 bfd_put_32 (abfd, instr_lo, bfd_addr + INST_WORD_SIZE);
1635 microblaze_elf_relax_section (bfd *abfd,
1637 struct bfd_link_info *link_info,
1640 Elf_Internal_Shdr *symtab_hdr;
1641 Elf_Internal_Rela *internal_relocs;
1642 Elf_Internal_Rela *free_relocs = NULL;
1643 Elf_Internal_Rela *irel, *irelend;
1644 bfd_byte *contents = NULL;
1645 bfd_byte *free_contents = NULL;
1650 struct elf_link_hash_entry *sym_hash;
1651 Elf_Internal_Sym *isymbuf, *isymend;
1652 Elf_Internal_Sym *isym;
1657 /* We only do this once per section. We may be able to delete some code
1658 by running multiple passes, but it is not worth it. */
1661 /* Only do this for a text section. */
1662 if (bfd_link_relocatable (link_info)
1663 || (sec->flags & SEC_RELOC) == 0
1664 || (sec->reloc_count == 0)
1665 || (sec->flags & SEC_CODE) == 0)
1668 BFD_ASSERT ((sec->size > 0) || (sec->rawsize > 0));
1670 /* If this is the first time we have been called for this section,
1671 initialize the cooked size. */
1673 sec->size = sec->rawsize;
1675 /* Get symbols for this section. */
1676 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1677 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1678 symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
1679 if (isymbuf == NULL)
1680 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, symcount,
1681 0, NULL, NULL, NULL);
1682 BFD_ASSERT (isymbuf != NULL);
1684 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, link_info->keep_memory);
1685 if (internal_relocs == NULL)
1687 if (! link_info->keep_memory)
1688 free_relocs = internal_relocs;
1690 sec->relax = (struct relax_table *) bfd_malloc ((sec->reloc_count + 1)
1691 * sizeof (struct relax_table));
1692 if (sec->relax == NULL)
1694 sec->relax_count = 0;
1696 irelend = internal_relocs + sec->reloc_count;
1698 for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
1701 if ((ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64_PCREL)
1702 && (ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64 ))
1703 continue; /* Can't delete this reloc. */
1705 /* Get the section contents. */
1706 if (contents == NULL)
1708 if (elf_section_data (sec)->this_hdr.contents != NULL)
1709 contents = elf_section_data (sec)->this_hdr.contents;
1712 contents = (bfd_byte *) bfd_malloc (sec->size);
1713 if (contents == NULL)
1715 free_contents = contents;
1717 if (!bfd_get_section_contents (abfd, sec, contents,
1718 (file_ptr) 0, sec->size))
1720 elf_section_data (sec)->this_hdr.contents = contents;
1724 /* Get the value of the symbol referred to by the reloc. */
1725 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1727 /* A local symbol. */
1730 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1731 if (isym->st_shndx == SHN_UNDEF)
1732 sym_sec = bfd_und_section_ptr;
1733 else if (isym->st_shndx == SHN_ABS)
1734 sym_sec = bfd_abs_section_ptr;
1735 else if (isym->st_shndx == SHN_COMMON)
1736 sym_sec = bfd_com_section_ptr;
1738 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1740 symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel);
1745 struct elf_link_hash_entry *h;
1747 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1748 h = elf_sym_hashes (abfd)[indx];
1749 BFD_ASSERT (h != NULL);
1751 if (h->root.type != bfd_link_hash_defined
1752 && h->root.type != bfd_link_hash_defweak)
1753 /* This appears to be a reference to an undefined
1754 symbol. Just ignore it--it will be caught by the
1755 regular reloc processing. */
1758 symval = (h->root.u.def.value
1759 + h->root.u.def.section->output_section->vma
1760 + h->root.u.def.section->output_offset);
1763 /* If this is a PC-relative reloc, subtract the instr offset from
1764 the symbol value. */
1765 if (ELF32_R_TYPE (irel->r_info) == (int) R_MICROBLAZE_64_PCREL)
1767 symval = symval + irel->r_addend
1769 + sec->output_section->vma
1770 + sec->output_offset);
1773 symval += irel->r_addend;
1775 if ((symval & 0xffff8000) == 0
1776 || (symval & 0xffff8000) == 0xffff8000)
1778 /* We can delete this instruction. */
1779 sec->relax[sec->relax_count].addr = irel->r_offset;
1780 sec->relax[sec->relax_count].size = INST_WORD_SIZE;
1783 /* Rewrite relocation type. */
1784 switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
1786 case R_MICROBLAZE_64_PCREL:
1787 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1788 (int) R_MICROBLAZE_32_PCREL_LO);
1790 case R_MICROBLAZE_64:
1791 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1792 (int) R_MICROBLAZE_32_LO);
1795 /* Cannot happen. */
1799 } /* Loop through all relocations. */
1801 /* Loop through the relocs again, and see if anything needs to change. */
1802 if (sec->relax_count > 0)
1804 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1806 sec->relax[sec->relax_count].addr = sec->size;
1808 for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
1812 /* Get the new reloc address. */
1813 nraddr = irel->r_offset - calc_fixup (irel->r_offset, 0, sec);
1814 switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
1818 case R_MICROBLAZE_64_PCREL:
1820 case R_MICROBLAZE_64:
1821 case R_MICROBLAZE_32_LO:
1822 /* If this reloc is against a symbol defined in this
1823 section, we must check the addend to see it will put the value in
1824 range to be adjusted, and hence must be changed. */
1825 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1827 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1828 /* Only handle relocs against .text. */
1829 if (isym->st_shndx == shndx
1830 && ELF32_ST_TYPE (isym->st_info) == STT_SECTION)
1831 irel->r_addend -= calc_fixup (irel->r_addend, 0, sec);
1834 case R_MICROBLAZE_NONE:
1836 /* This was a PC-relative instruction that was
1837 completely resolved. */
1839 bfd_vma target_address;
1840 target_address = irel->r_addend + irel->r_offset;
1841 sfix = calc_fixup (irel->r_offset, 0, sec);
1842 efix = calc_fixup (target_address, 0, sec);
1843 irel->r_addend -= (efix - sfix);
1844 /* Should use HOWTO. */
1845 microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset,
1849 case R_MICROBLAZE_64_NONE:
1851 /* This was a PC-relative 64-bit instruction that was
1852 completely resolved. */
1854 bfd_vma target_address;
1855 target_address = irel->r_addend + irel->r_offset + INST_WORD_SIZE;
1856 sfix = calc_fixup (irel->r_offset + INST_WORD_SIZE, 0, sec);
1857 efix = calc_fixup (target_address, 0, sec);
1858 irel->r_addend -= (efix - sfix);
1859 microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset
1860 + INST_WORD_SIZE, irel->r_addend);
1864 irel->r_offset = nraddr;
1865 } /* Change all relocs in this section. */
1867 /* Look through all other sections. */
1868 for (o = abfd->sections; o != NULL; o = o->next)
1870 Elf_Internal_Rela *irelocs;
1871 Elf_Internal_Rela *irelscan, *irelscanend;
1872 bfd_byte *ocontents;
1875 || (o->flags & SEC_RELOC) == 0
1876 || o->reloc_count == 0)
1879 /* We always cache the relocs. Perhaps, if info->keep_memory is
1880 FALSE, we should free them, if we are permitted to. */
1882 irelocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, TRUE);
1883 if (irelocs == NULL)
1887 irelscanend = irelocs + o->reloc_count;
1888 for (irelscan = irelocs; irelscan < irelscanend; irelscan++)
1890 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32)
1892 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1894 /* Look at the reloc only if the value has been resolved. */
1895 if (isym->st_shndx == shndx
1896 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
1898 if (ocontents == NULL)
1900 if (elf_section_data (o)->this_hdr.contents != NULL)
1901 ocontents = elf_section_data (o)->this_hdr.contents;
1904 /* We always cache the section contents.
1905 Perhaps, if info->keep_memory is FALSE, we
1906 should free them, if we are permitted to. */
1907 if (o->rawsize == 0)
1908 o->rawsize = o->size;
1909 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1910 if (ocontents == NULL)
1912 if (!bfd_get_section_contents (abfd, o, ocontents,
1916 elf_section_data (o)->this_hdr.contents = ocontents;
1920 irelscan->r_addend -= calc_fixup (irelscan->r_addend, 0, sec);
1922 else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_SYM_OP_SYM)
1924 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1926 /* Look at the reloc only if the value has been resolved. */
1927 if (ocontents == NULL)
1929 if (elf_section_data (o)->this_hdr.contents != NULL)
1930 ocontents = elf_section_data (o)->this_hdr.contents;
1933 /* We always cache the section contents.
1934 Perhaps, if info->keep_memory is FALSE, we
1935 should free them, if we are permitted to. */
1937 if (o->rawsize == 0)
1938 o->rawsize = o->size;
1939 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1940 if (ocontents == NULL)
1942 if (!bfd_get_section_contents (abfd, o, ocontents,
1946 elf_section_data (o)->this_hdr.contents = ocontents;
1949 irelscan->r_addend -= calc_fixup (irel->r_addend
1955 else if ((ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_PCREL_LO)
1956 || (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_LO))
1958 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1960 /* Look at the reloc only if the value has been resolved. */
1961 if (isym->st_shndx == shndx
1962 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
1965 bfd_vma target_address;
1967 if (ocontents == NULL)
1969 if (elf_section_data (o)->this_hdr.contents != NULL)
1970 ocontents = elf_section_data (o)->this_hdr.contents;
1973 /* We always cache the section contents.
1974 Perhaps, if info->keep_memory is FALSE, we
1975 should free them, if we are permitted to. */
1976 if (o->rawsize == 0)
1977 o->rawsize = o->size;
1978 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1979 if (ocontents == NULL)
1981 if (!bfd_get_section_contents (abfd, o, ocontents,
1985 elf_section_data (o)->this_hdr.contents = ocontents;
1989 unsigned long instr = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1990 immediate = instr & 0x0000ffff;
1991 target_address = immediate;
1992 offset = calc_fixup (target_address, 0, sec);
1993 immediate -= offset;
1994 irelscan->r_addend -= offset;
1995 microblaze_bfd_write_imm_value_32 (abfd, ocontents + irelscan->r_offset,
1996 irelscan->r_addend);
2000 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64)
2002 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
2004 /* Look at the reloc only if the value has been resolved. */
2005 if (isym->st_shndx == shndx
2006 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
2010 if (ocontents == NULL)
2012 if (elf_section_data (o)->this_hdr.contents != NULL)
2013 ocontents = elf_section_data (o)->this_hdr.contents;
2016 /* We always cache the section contents.
2017 Perhaps, if info->keep_memory is FALSE, we
2018 should free them, if we are permitted to. */
2020 if (o->rawsize == 0)
2021 o->rawsize = o->size;
2022 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
2023 if (ocontents == NULL)
2025 if (!bfd_get_section_contents (abfd, o, ocontents,
2029 elf_section_data (o)->this_hdr.contents = ocontents;
2032 unsigned long instr_hi = bfd_get_32 (abfd, ocontents
2033 + irelscan->r_offset);
2034 unsigned long instr_lo = bfd_get_32 (abfd, ocontents
2035 + irelscan->r_offset
2037 immediate = (instr_hi & 0x0000ffff) << 16;
2038 immediate |= (instr_lo & 0x0000ffff);
2039 offset = calc_fixup (irelscan->r_addend, 0, sec);
2040 immediate -= offset;
2041 irelscan->r_addend -= offset;
2044 else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64_PCREL)
2046 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
2048 /* Look at the reloc only if the value has been resolved. */
2049 if (isym->st_shndx == shndx
2050 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
2053 bfd_vma target_address;
2055 if (ocontents == NULL)
2057 if (elf_section_data (o)->this_hdr.contents != NULL)
2058 ocontents = elf_section_data (o)->this_hdr.contents;
2061 /* We always cache the section contents.
2062 Perhaps, if info->keep_memory is FALSE, we
2063 should free them, if we are permitted to. */
2064 if (o->rawsize == 0)
2065 o->rawsize = o->size;
2066 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
2067 if (ocontents == NULL)
2069 if (!bfd_get_section_contents (abfd, o, ocontents,
2073 elf_section_data (o)->this_hdr.contents = ocontents;
2076 unsigned long instr_hi = bfd_get_32 (abfd, ocontents
2077 + irelscan->r_offset);
2078 unsigned long instr_lo = bfd_get_32 (abfd, ocontents
2079 + irelscan->r_offset
2081 immediate = (instr_hi & 0x0000ffff) << 16;
2082 immediate |= (instr_lo & 0x0000ffff);
2083 target_address = immediate;
2084 offset = calc_fixup (target_address, 0, sec);
2085 immediate -= offset;
2086 irelscan->r_addend -= offset;
2087 microblaze_bfd_write_imm_value_64 (abfd, ocontents
2088 + irelscan->r_offset, immediate);
2094 /* Adjust the local symbols defined in this section. */
2095 isymend = isymbuf + symtab_hdr->sh_info;
2096 for (isym = isymbuf; isym < isymend; isym++)
2098 if (isym->st_shndx == shndx)
2100 isym->st_value -= calc_fixup (isym->st_value, 0, sec);
2102 isym->st_size -= calc_fixup (isym->st_value, isym->st_size, sec);
2106 /* Now adjust the global symbols defined in this section. */
2107 isym = isymbuf + symtab_hdr->sh_info;
2108 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) - symtab_hdr->sh_info;
2109 for (sym_index = 0; sym_index < symcount; sym_index++)
2111 sym_hash = elf_sym_hashes (abfd)[sym_index];
2112 if ((sym_hash->root.type == bfd_link_hash_defined
2113 || sym_hash->root.type == bfd_link_hash_defweak)
2114 && sym_hash->root.u.def.section == sec)
2116 sym_hash->root.u.def.value -= calc_fixup (sym_hash->root.u.def.value,
2119 sym_hash->size -= calc_fixup (sym_hash->root.u.def.value,
2120 sym_hash->size, sec);
2124 /* Physically move the code and change the cooked size. */
2125 dest = sec->relax[0].addr;
2126 for (i = 0; i < sec->relax_count; i++)
2129 src = sec->relax[i].addr + sec->relax[i].size;
2130 len = sec->relax[i+1].addr - sec->relax[i].addr - sec->relax[i].size;
2132 memmove (contents + dest, contents + src, len);
2133 sec->size -= sec->relax[i].size;
2137 elf_section_data (sec)->relocs = internal_relocs;
2140 elf_section_data (sec)->this_hdr.contents = contents;
2141 free_contents = NULL;
2143 symtab_hdr->contents = (bfd_byte *) isymbuf;
2146 if (free_relocs != NULL)
2152 if (free_contents != NULL)
2154 if (!link_info->keep_memory)
2155 free (free_contents);
2157 /* Cache the section contents for elf_link_input_bfd. */
2158 elf_section_data (sec)->this_hdr.contents = contents;
2159 free_contents = NULL;
2162 if (sec->relax_count == 0)
2173 if (free_relocs != NULL)
2175 if (free_contents != NULL)
2176 free (free_contents);
2177 if (sec->relax != NULL)
2181 sec->relax_count = 0;
2186 /* Return the section that should be marked against GC for a given
2190 microblaze_elf_gc_mark_hook (asection *sec,
2191 struct bfd_link_info * info,
2192 Elf_Internal_Rela * rel,
2193 struct elf_link_hash_entry * h,
2194 Elf_Internal_Sym * sym)
2197 switch (ELF32_R_TYPE (rel->r_info))
2199 case R_MICROBLAZE_GNU_VTINHERIT:
2200 case R_MICROBLAZE_GNU_VTENTRY:
2204 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2209 #define PLT_ENTRY_SIZE 16
2211 #define PLT_ENTRY_WORD_0 0xb0000000 /* "imm 0". */
2212 #define PLT_ENTRY_WORD_1 0xe9940000 /* "lwi r12,r20,0" - relocated to lwi r12,r20,func@GOT. */
2213 #define PLT_ENTRY_WORD_1_NOPIC 0xe9800000 /* "lwi r12,r0,0" - non-PIC object. */
2214 #define PLT_ENTRY_WORD_2 0x98186000 /* "brad r12". */
2215 #define PLT_ENTRY_WORD_3 0x80000000 /* "nop". */
2218 update_local_sym_info (bfd *abfd,
2219 Elf_Internal_Shdr *symtab_hdr,
2220 unsigned long r_symndx,
2221 unsigned int tls_type)
2223 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2224 unsigned char *local_got_tls_masks;
2226 if (local_got_refcounts == NULL)
2228 bfd_size_type size = symtab_hdr->sh_info;
2230 size *= (sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks));
2231 local_got_refcounts = bfd_zalloc (abfd, size);
2232 if (local_got_refcounts == NULL)
2234 elf_local_got_refcounts (abfd) = local_got_refcounts;
2237 local_got_tls_masks =
2238 (unsigned char *) (local_got_refcounts + symtab_hdr->sh_info);
2239 local_got_tls_masks[r_symndx] |= tls_type;
2240 local_got_refcounts[r_symndx] += 1;
2244 /* Look through the relocs for a section during the first phase. */
2247 microblaze_elf_check_relocs (bfd * abfd,
2248 struct bfd_link_info * info,
2250 const Elf_Internal_Rela * relocs)
2252 Elf_Internal_Shdr * symtab_hdr;
2253 struct elf_link_hash_entry ** sym_hashes;
2254 struct elf_link_hash_entry ** sym_hashes_end;
2255 const Elf_Internal_Rela * rel;
2256 const Elf_Internal_Rela * rel_end;
2257 struct elf32_mb_link_hash_table *htab;
2258 asection *sreloc = NULL;
2260 if (bfd_link_relocatable (info))
2263 htab = elf32_mb_hash_table (info);
2267 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2268 sym_hashes = elf_sym_hashes (abfd);
2269 sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
2270 if (!elf_bad_symtab (abfd))
2271 sym_hashes_end -= symtab_hdr->sh_info;
2273 rel_end = relocs + sec->reloc_count;
2275 for (rel = relocs; rel < rel_end; rel++)
2277 unsigned int r_type;
2278 struct elf_link_hash_entry * h;
2279 unsigned long r_symndx;
2280 unsigned char tls_type = 0;
2282 r_symndx = ELF32_R_SYM (rel->r_info);
2283 r_type = ELF32_R_TYPE (rel->r_info);
2285 if (r_symndx < symtab_hdr->sh_info)
2289 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
2290 while (h->root.type == bfd_link_hash_indirect
2291 || h->root.type == bfd_link_hash_warning)
2292 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2297 /* This relocation describes the C++ object vtable hierarchy.
2298 Reconstruct it for later use during GC. */
2299 case R_MICROBLAZE_GNU_VTINHERIT:
2300 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2304 /* This relocation describes which C++ vtable entries are actually
2305 used. Record for later use during GC. */
2306 case R_MICROBLAZE_GNU_VTENTRY:
2307 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2311 /* This relocation requires .plt entry. */
2312 case R_MICROBLAZE_PLT_64:
2316 h->plt.refcount += 1;
2320 /* This relocation requires .got entry. */
2321 case R_MICROBLAZE_TLSGD:
2322 tls_type |= (TLS_TLS | TLS_GD);
2324 case R_MICROBLAZE_TLSLD:
2325 tls_type |= (TLS_TLS | TLS_LD);
2328 sec->has_tls_reloc = 1;
2330 case R_MICROBLAZE_GOT_64:
2331 if (htab->elf.sgot == NULL)
2333 if (htab->elf.dynobj == NULL)
2334 htab->elf.dynobj = abfd;
2335 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2340 h->got.refcount += 1;
2341 elf32_mb_hash_entry (h)->tls_mask |= tls_type;
2345 if (! update_local_sym_info(abfd, symtab_hdr, r_symndx, tls_type) )
2350 case R_MICROBLAZE_GOTOFF_64:
2351 case R_MICROBLAZE_GOTOFF_32:
2352 if (htab->elf.sgot == NULL)
2354 if (htab->elf.dynobj == NULL)
2355 htab->elf.dynobj = abfd;
2356 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2361 case R_MICROBLAZE_64:
2362 case R_MICROBLAZE_64_PCREL:
2363 case R_MICROBLAZE_32:
2365 if (h != NULL && !bfd_link_pic (info))
2367 /* we may need a copy reloc. */
2370 /* we may also need a .plt entry. */
2371 h->plt.refcount += 1;
2372 if (ELF32_R_TYPE (rel->r_info) != R_MICROBLAZE_64_PCREL)
2373 h->pointer_equality_needed = 1;
2377 /* If we are creating a shared library, and this is a reloc
2378 against a global symbol, or a non PC relative reloc
2379 against a local symbol, then we need to copy the reloc
2380 into the shared library. However, if we are linking with
2381 -Bsymbolic, we do not need to copy a reloc against a
2382 global symbol which is defined in an object we are
2383 including in the link (i.e., DEF_REGULAR is set). At
2384 this point we have not seen all the input files, so it is
2385 possible that DEF_REGULAR is not set now but will be set
2386 later (it is never cleared). In case of a weak definition,
2387 DEF_REGULAR may be cleared later by a strong definition in
2388 a shared library. We account for that possibility below by
2389 storing information in the relocs_copied field of the hash
2390 table entry. A similar situation occurs when creating
2391 shared libraries and symbol visibility changes render the
2394 If on the other hand, we are creating an executable, we
2395 may need to keep relocations for symbols satisfied by a
2396 dynamic library if we manage to avoid copy relocs for the
2399 if ((bfd_link_pic (info)
2400 && (sec->flags & SEC_ALLOC) != 0
2401 && (r_type != R_MICROBLAZE_64_PCREL
2403 && (! info->symbolic
2404 || h->root.type == bfd_link_hash_defweak
2405 || !h->def_regular))))
2406 || (!bfd_link_pic (info)
2407 && (sec->flags & SEC_ALLOC) != 0
2409 && (h->root.type == bfd_link_hash_defweak
2410 || !h->def_regular)))
2412 struct elf_dyn_relocs *p;
2413 struct elf_dyn_relocs **head;
2415 /* When creating a shared object, we must copy these
2416 relocs into the output file. We create a reloc
2417 section in dynobj and make room for the reloc. */
2423 if (htab->elf.dynobj == NULL)
2424 htab->elf.dynobj = abfd;
2425 dynobj = htab->elf.dynobj;
2427 sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
2433 /* If this is a global symbol, we count the number of
2434 relocations we need for this symbol. */
2436 head = &((struct elf32_mb_link_hash_entry *) h)->dyn_relocs;
2439 /* Track dynamic relocs needed for local syms too.
2440 We really need local syms available to do this
2444 Elf_Internal_Sym *isym;
2447 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
2452 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2456 vpp = &elf_section_data (s)->local_dynrel;
2457 head = (struct elf_dyn_relocs **) vpp;
2461 if (p == NULL || p->sec != sec)
2463 bfd_size_type amt = sizeof *p;
2464 p = ((struct elf_dyn_relocs *)
2465 bfd_alloc (htab->elf.dynobj, amt));
2476 if (r_type == R_MICROBLAZE_64_PCREL)
2487 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2490 microblaze_elf_copy_indirect_symbol (struct bfd_link_info *info,
2491 struct elf_link_hash_entry *dir,
2492 struct elf_link_hash_entry *ind)
2494 struct elf32_mb_link_hash_entry *edir, *eind;
2496 edir = (struct elf32_mb_link_hash_entry *) dir;
2497 eind = (struct elf32_mb_link_hash_entry *) ind;
2499 if (eind->dyn_relocs != NULL)
2501 if (edir->dyn_relocs != NULL)
2503 struct elf_dyn_relocs **pp;
2504 struct elf_dyn_relocs *p;
2506 if (ind->root.type == bfd_link_hash_indirect)
2509 /* Add reloc counts against the weak sym to the strong sym
2510 list. Merge any entries against the same section. */
2511 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2513 struct elf_dyn_relocs *q;
2515 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2516 if (q->sec == p->sec)
2518 q->pc_count += p->pc_count;
2519 q->count += p->count;
2526 *pp = edir->dyn_relocs;
2529 edir->dyn_relocs = eind->dyn_relocs;
2530 eind->dyn_relocs = NULL;
2533 edir->tls_mask |= eind->tls_mask;
2535 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2538 /* Find dynamic relocs for H that apply to read-only sections. */
2541 readonly_dynrelocs (struct elf_link_hash_entry *h)
2543 struct elf_dyn_relocs *p;
2545 for (p = elf32_mb_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
2547 asection *s = p->sec->output_section;
2549 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2556 microblaze_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2557 struct elf_link_hash_entry *h)
2559 struct elf32_mb_link_hash_table *htab;
2561 unsigned int power_of_two;
2563 htab = elf32_mb_hash_table (info);
2567 /* If this is a function, put it in the procedure linkage table. We
2568 will fill in the contents of the procedure linkage table later,
2569 when we know the address of the .got section. */
2570 if (h->type == STT_FUNC
2573 if (h->plt.refcount <= 0
2574 || SYMBOL_CALLS_LOCAL (info, h)
2575 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2576 && h->root.type == bfd_link_hash_undefweak))
2578 /* This case can occur if we saw a PLT reloc in an input
2579 file, but the symbol was never referred to by a dynamic
2580 object, or if all references were garbage collected. In
2581 such a case, we don't actually need to build a procedure
2582 linkage table, and we can just do a PC32 reloc instead. */
2583 h->plt.offset = (bfd_vma) -1;
2590 /* It's possible that we incorrectly decided a .plt reloc was
2591 needed for an R_MICROBLAZE_64_PCREL reloc to a non-function sym in
2592 check_relocs. We can't decide accurately between function and
2593 non-function syms in check-relocs; Objects loaded later in
2594 the link may change h->type. So fix it now. */
2595 h->plt.offset = (bfd_vma) -1;
2597 /* If this is a weak symbol, and there is a real definition, the
2598 processor independent code will have arranged for us to see the
2599 real definition first, and we can just use the same value. */
2600 if (h->is_weakalias)
2602 struct elf_link_hash_entry *def = weakdef (h);
2603 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2604 h->root.u.def.section = def->root.u.def.section;
2605 h->root.u.def.value = def->root.u.def.value;
2609 /* This is a reference to a symbol defined by a dynamic object which
2610 is not a function. */
2612 /* If we are creating a shared library, we must presume that the
2613 only references to the symbol are via the global offset table.
2614 For such cases we need not do anything here; the relocations will
2615 be handled correctly by relocate_section. */
2616 if (bfd_link_pic (info))
2619 /* If there are no references to this symbol that do not use the
2620 GOT, we don't need to generate a copy reloc. */
2621 if (!h->non_got_ref)
2624 /* If -z nocopyreloc was given, we won't generate them either. */
2625 if (info->nocopyreloc)
2631 /* If we don't find any dynamic relocs in read-only sections, then
2632 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2633 if (!readonly_dynrelocs (h))
2639 /* We must allocate the symbol in our .dynbss section, which will
2640 become part of the .bss section of the executable. There will be
2641 an entry for this symbol in the .dynsym section. The dynamic
2642 object will contain position independent code, so all references
2643 from the dynamic object to this symbol will go through the global
2644 offset table. The dynamic linker will use the .dynsym entry to
2645 determine the address it must put in the global offset table, so
2646 both the dynamic object and the regular object will refer to the
2647 same memory location for the variable. */
2649 /* We must generate a R_MICROBLAZE_COPY reloc to tell the dynamic linker
2650 to copy the initial value out of the dynamic object and into the
2651 runtime process image. */
2652 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2654 s = htab->elf.sdynrelro;
2655 srel = htab->elf.sreldynrelro;
2659 s = htab->elf.sdynbss;
2660 srel = htab->elf.srelbss;
2662 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2664 srel->size += sizeof (Elf32_External_Rela);
2668 /* We need to figure out the alignment required for this symbol. I
2669 have no idea how ELF linkers handle this. */
2670 power_of_two = bfd_log2 (h->size);
2671 if (power_of_two > 3)
2674 /* Apply the required alignment. */
2675 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
2676 if (power_of_two > s->alignment_power)
2678 if (!bfd_set_section_alignment (s->owner, s, power_of_two))
2682 /* Define the symbol as being at this point in the section. */
2683 h->root.u.def.section = s;
2684 h->root.u.def.value = s->size;
2686 /* Increment the section size to make room for the symbol. */
2691 /* Allocate space in .plt, .got and associated reloc sections for
2695 allocate_dynrelocs (struct elf_link_hash_entry *h, void * dat)
2697 struct bfd_link_info *info;
2698 struct elf32_mb_link_hash_table *htab;
2699 struct elf32_mb_link_hash_entry *eh;
2700 struct elf_dyn_relocs *p;
2702 if (h->root.type == bfd_link_hash_indirect)
2705 info = (struct bfd_link_info *) dat;
2706 htab = elf32_mb_hash_table (info);
2710 if (htab->elf.dynamic_sections_created
2711 && h->plt.refcount > 0)
2713 /* Make sure this symbol is output as a dynamic symbol.
2714 Undefined weak syms won't yet be marked as dynamic. */
2715 if (h->dynindx == -1
2716 && !h->forced_local)
2718 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2722 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2724 asection *s = htab->elf.splt;
2726 /* The first entry in .plt is reserved. */
2728 s->size = PLT_ENTRY_SIZE;
2730 h->plt.offset = s->size;
2732 /* If this symbol is not defined in a regular file, and we are
2733 not generating a shared library, then set the symbol to this
2734 location in the .plt. This is required to make function
2735 pointers compare as equal between the normal executable and
2736 the shared library. */
2737 if (! bfd_link_pic (info)
2740 h->root.u.def.section = s;
2741 h->root.u.def.value = h->plt.offset;
2744 /* Make room for this entry. */
2745 s->size += PLT_ENTRY_SIZE;
2747 /* We also need to make an entry in the .got.plt section, which
2748 will be placed in the .got section by the linker script. */
2749 htab->elf.sgotplt->size += 4;
2751 /* We also need to make an entry in the .rel.plt section. */
2752 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
2756 h->plt.offset = (bfd_vma) -1;
2762 h->plt.offset = (bfd_vma) -1;
2766 eh = (struct elf32_mb_link_hash_entry *) h;
2767 if (h->got.refcount > 0)
2772 /* Make sure this symbol is output as a dynamic symbol.
2773 Undefined weak syms won't yet be marked as dynamic. */
2774 if (h->dynindx == -1
2775 && !h->forced_local)
2777 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2782 if ((eh->tls_mask & TLS_TLS) != 0)
2784 /* Handle TLS Symbol */
2785 if ((eh->tls_mask & TLS_LD) != 0)
2787 if (!eh->elf.def_dynamic)
2788 /* We'll just use htab->tlsld_got.offset. This should
2789 always be the case. It's a little odd if we have
2790 a local dynamic reloc against a non-local symbol. */
2791 htab->tlsld_got.refcount += 1;
2795 if ((eh->tls_mask & TLS_GD) != 0)
2800 /* Regular (non-TLS) symbol */
2805 h->got.offset = (bfd_vma) -1;
2810 h->got.offset = s->size;
2812 htab->elf.srelgot->size += need * (sizeof (Elf32_External_Rela) / 4);
2816 h->got.offset = (bfd_vma) -1;
2818 if (eh->dyn_relocs == NULL)
2821 /* In the shared -Bsymbolic case, discard space allocated for
2822 dynamic pc-relative relocs against symbols which turn out to be
2823 defined in regular objects. For the normal shared case, discard
2824 space for pc-relative relocs that have become local due to symbol
2825 visibility changes. */
2827 if (bfd_link_pic (info))
2833 struct elf_dyn_relocs **pp;
2835 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2837 p->count -= p->pc_count;
2845 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2846 eh->dyn_relocs = NULL;
2850 /* For the non-shared case, discard space for relocs against
2851 symbols which turn out to need copy relocs or are not
2857 || (htab->elf.dynamic_sections_created
2858 && (h->root.type == bfd_link_hash_undefweak
2859 || h->root.type == bfd_link_hash_undefined))))
2861 /* Make sure this symbol is output as a dynamic symbol.
2862 Undefined weak syms won't yet be marked as dynamic. */
2863 if (h->dynindx == -1
2864 && !h->forced_local)
2866 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2870 /* If that succeeded, we know we'll be keeping all the
2872 if (h->dynindx != -1)
2876 eh->dyn_relocs = NULL;
2881 /* Finally, allocate space. */
2882 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2884 asection *sreloc = elf_section_data (p->sec)->sreloc;
2885 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2891 /* Set the sizes of the dynamic sections. */
2894 microblaze_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2895 struct bfd_link_info *info)
2897 struct elf32_mb_link_hash_table *htab;
2902 htab = elf32_mb_hash_table (info);
2906 dynobj = htab->elf.dynobj;
2907 BFD_ASSERT (dynobj != NULL);
2909 /* Set up .got offsets for local syms, and space for local dynamic
2911 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2913 bfd_signed_vma *local_got;
2914 bfd_signed_vma *end_local_got;
2915 bfd_size_type locsymcount;
2916 Elf_Internal_Shdr *symtab_hdr;
2917 unsigned char *lgot_masks;
2920 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2923 for (s = ibfd->sections; s != NULL; s = s->next)
2925 struct elf_dyn_relocs *p;
2927 for (p = ((struct elf_dyn_relocs *)
2928 elf_section_data (s)->local_dynrel);
2932 if (!bfd_is_abs_section (p->sec)
2933 && bfd_is_abs_section (p->sec->output_section))
2935 /* Input section has been discarded, either because
2936 it is a copy of a linkonce section or due to
2937 linker script /DISCARD/, so we'll be discarding
2940 else if (p->count != 0)
2942 srel = elf_section_data (p->sec)->sreloc;
2943 srel->size += p->count * sizeof (Elf32_External_Rela);
2944 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2945 info->flags |= DF_TEXTREL;
2950 local_got = elf_local_got_refcounts (ibfd);
2954 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2955 locsymcount = symtab_hdr->sh_info;
2956 end_local_got = local_got + locsymcount;
2957 lgot_masks = (unsigned char *) end_local_got;
2959 srel = htab->elf.srelgot;
2961 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
2965 unsigned int need = 0;
2966 if ((*lgot_masks & TLS_TLS) != 0)
2968 if ((*lgot_masks & TLS_GD) != 0)
2970 if ((*lgot_masks & TLS_LD) != 0)
2971 htab->tlsld_got.refcount += 1;
2978 *local_got = (bfd_vma) -1;
2982 *local_got = s->size;
2984 if (bfd_link_pic (info))
2985 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
2989 *local_got = (bfd_vma) -1;
2993 /* Allocate global sym .plt and .got entries, and space for global
2994 sym dynamic relocs. */
2995 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
2997 if (htab->tlsld_got.refcount > 0)
2999 htab->tlsld_got.offset = htab->elf.sgot->size;
3000 htab->elf.sgot->size += 8;
3001 if (bfd_link_pic (info))
3002 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3005 htab->tlsld_got.offset = (bfd_vma) -1;
3007 if (elf_hash_table (info)->dynamic_sections_created)
3009 /* Make space for the trailing nop in .plt. */
3010 if (htab->elf.splt->size > 0)
3011 htab->elf.splt->size += 4;
3014 /* The check_relocs and adjust_dynamic_symbol entry points have
3015 determined the sizes of the various dynamic sections. Allocate
3017 for (s = dynobj->sections; s != NULL; s = s->next)
3020 bfd_boolean strip = FALSE;
3022 if ((s->flags & SEC_LINKER_CREATED) == 0)
3025 /* It's OK to base decisions on the section name, because none
3026 of the dynobj section names depend upon the input files. */
3027 name = bfd_get_section_name (dynobj, s);
3029 if (strncmp (name, ".rela", 5) == 0)
3033 /* If we don't need this section, strip it from the
3034 output file. This is to handle .rela.bss and
3035 .rela.plt. We must create it in
3036 create_dynamic_sections, because it must be created
3037 before the linker maps input sections to output
3038 sections. The linker does that before
3039 adjust_dynamic_symbol is called, and it is that
3040 function which decides whether anything needs to go
3041 into these sections. */
3046 /* We use the reloc_count field as a counter if we need
3047 to copy relocs into the output file. */
3051 else if (s != htab->elf.splt
3052 && s != htab->elf.sgot
3053 && s != htab->elf.sgotplt
3054 && s != htab->elf.sdynbss
3055 && s != htab->elf.sdynrelro)
3057 /* It's not one of our sections, so don't allocate space. */
3063 s->flags |= SEC_EXCLUDE;
3067 /* Allocate memory for the section contents. */
3068 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3069 Unused entries should be reclaimed before the section's contents
3070 are written out, but at the moment this does not happen. Thus in
3071 order to prevent writing out garbage, we initialise the section's
3072 contents to zero. */
3073 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3074 if (s->contents == NULL && s->size != 0)
3078 if (elf_hash_table (info)->dynamic_sections_created)
3080 /* Add some entries to the .dynamic section. We fill in the
3081 values later, in microblaze_elf_finish_dynamic_sections, but we
3082 must add the entries now so that we get the correct size for
3083 the .dynamic section. The DT_DEBUG entry is filled in by the
3084 dynamic linker and used by the debugger. */
3085 #define add_dynamic_entry(TAG, VAL) \
3086 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3088 if (bfd_link_executable (info))
3090 if (!add_dynamic_entry (DT_DEBUG, 0))
3094 if (!add_dynamic_entry (DT_RELA, 0)
3095 || !add_dynamic_entry (DT_RELASZ, 0)
3096 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3099 if (htab->elf.splt->size != 0)
3101 if (!add_dynamic_entry (DT_PLTGOT, 0)
3102 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3103 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3104 || !add_dynamic_entry (DT_JMPREL, 0)
3105 || !add_dynamic_entry (DT_BIND_NOW, 1))
3109 if (info->flags & DF_TEXTREL)
3111 if (!add_dynamic_entry (DT_TEXTREL, 0))
3115 #undef add_dynamic_entry
3119 /* Finish up dynamic symbol handling. We set the contents of various
3120 dynamic sections here. */
3123 microblaze_elf_finish_dynamic_symbol (bfd *output_bfd,
3124 struct bfd_link_info *info,
3125 struct elf_link_hash_entry *h,
3126 Elf_Internal_Sym *sym)
3128 struct elf32_mb_link_hash_table *htab;
3129 struct elf32_mb_link_hash_entry *eh = elf32_mb_hash_entry(h);
3131 htab = elf32_mb_hash_table (info);
3135 if (h->plt.offset != (bfd_vma) -1)
3140 Elf_Internal_Rela rela;
3146 /* This symbol has an entry in the procedure linkage table. Set
3148 BFD_ASSERT (h->dynindx != -1);
3150 splt = htab->elf.splt;
3151 srela = htab->elf.srelplt;
3152 sgotplt = htab->elf.sgotplt;
3153 BFD_ASSERT (splt != NULL && srela != NULL && sgotplt != NULL);
3155 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; /* first entry reserved. */
3156 got_offset = (plt_index + 3) * 4; /* 3 reserved ??? */
3157 got_addr = got_offset;
3159 /* For non-PIC objects we need absolute address of the GOT entry. */
3160 if (!bfd_link_pic (info))
3161 got_addr += sgotplt->output_section->vma + sgotplt->output_offset;
3163 /* Fill in the entry in the procedure linkage table. */
3164 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_0 + ((got_addr >> 16) & 0xffff),
3165 splt->contents + h->plt.offset);
3166 if (bfd_link_pic (info))
3167 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1 + (got_addr & 0xffff),
3168 splt->contents + h->plt.offset + 4);
3170 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1_NOPIC + (got_addr & 0xffff),
3171 splt->contents + h->plt.offset + 4);
3172 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_2,
3173 splt->contents + h->plt.offset + 8);
3174 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_3,
3175 splt->contents + h->plt.offset + 12);
3177 /* Any additions to the .got section??? */
3178 /* bfd_put_32 (output_bfd,
3179 splt->output_section->vma + splt->output_offset + h->plt.offset + 4,
3180 sgotplt->contents + got_offset); */
3182 /* Fill in the entry in the .rela.plt section. */
3183 rela.r_offset = (sgotplt->output_section->vma
3184 + sgotplt->output_offset
3186 rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_JUMP_SLOT);
3188 loc = srela->contents;
3189 loc += plt_index * sizeof (Elf32_External_Rela);
3190 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3192 if (!h->def_regular)
3194 /* Mark the symbol as undefined, rather than as defined in
3195 the .plt section. Zero the value. */
3196 sym->st_shndx = SHN_UNDEF;
3201 /* h->got.refcount to be checked ? */
3202 if (h->got.offset != (bfd_vma) -1 &&
3203 ! ((h->got.offset & 1) ||
3204 IS_TLS_LD(eh->tls_mask) || IS_TLS_GD(eh->tls_mask)))
3210 /* This symbol has an entry in the global offset table. Set it
3213 sgot = htab->elf.sgot;
3214 srela = htab->elf.srelgot;
3215 BFD_ASSERT (sgot != NULL && srela != NULL);
3217 offset = (sgot->output_section->vma + sgot->output_offset
3218 + (h->got.offset &~ (bfd_vma) 1));
3220 /* If this is a -Bsymbolic link, and the symbol is defined
3221 locally, we just want to emit a RELATIVE reloc. Likewise if
3222 the symbol was forced to be local because of a version file.
3223 The entry in the global offset table will already have been
3224 initialized in the relocate_section function. */
3225 if (bfd_link_pic (info)
3226 && ((info->symbolic && h->def_regular)
3227 || h->dynindx == -1))
3229 asection *sec = h->root.u.def.section;
3232 value = h->root.u.def.value;
3233 if (sec->output_section != NULL)
3234 /* PR 21180: If the output section is NULL, then the symbol is no
3235 longer needed, and in theory the GOT entry is redundant. But
3236 it is too late to change our minds now... */
3237 value += sec->output_section->vma + sec->output_offset;
3239 microblaze_elf_output_dynamic_relocation (output_bfd,
3240 srela, srela->reloc_count++,
3242 R_MICROBLAZE_REL, offset,
3247 microblaze_elf_output_dynamic_relocation (output_bfd,
3248 srela, srela->reloc_count++,
3250 R_MICROBLAZE_GLOB_DAT,
3254 bfd_put_32 (output_bfd, (bfd_vma) 0,
3255 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3261 Elf_Internal_Rela rela;
3264 /* This symbols needs a copy reloc. Set it up. */
3266 BFD_ASSERT (h->dynindx != -1);
3268 rela.r_offset = (h->root.u.def.value
3269 + h->root.u.def.section->output_section->vma
3270 + h->root.u.def.section->output_offset);
3271 rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_COPY);
3273 if (h->root.u.def.section == htab->elf.sdynrelro)
3274 s = htab->elf.sreldynrelro;
3276 s = htab->elf.srelbss;
3277 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3278 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3281 /* Mark some specially defined symbols as absolute. */
3282 if (h == htab->elf.hdynamic
3283 || h == htab->elf.hgot
3284 || h == htab->elf.hplt)
3285 sym->st_shndx = SHN_ABS;
3291 /* Finish up the dynamic sections. */
3294 microblaze_elf_finish_dynamic_sections (bfd *output_bfd,
3295 struct bfd_link_info *info)
3298 asection *sdyn, *sgot;
3299 struct elf32_mb_link_hash_table *htab;
3301 htab = elf32_mb_hash_table (info);
3305 dynobj = htab->elf.dynobj;
3307 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3309 if (htab->elf.dynamic_sections_created)
3312 Elf32_External_Dyn *dyncon, *dynconend;
3314 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3315 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3316 for (; dyncon < dynconend; dyncon++)
3318 Elf_Internal_Dyn dyn;
3322 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3327 s = htab->elf.sgotplt;
3332 s = htab->elf.srelplt;
3337 s = htab->elf.srelplt;
3350 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3352 dyn.d_un.d_val = s->size;
3354 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3357 splt = htab->elf.splt;
3358 BFD_ASSERT (splt != NULL && sdyn != NULL);
3360 /* Clear the first entry in the procedure linkage table,
3361 and put a nop in the last four bytes. */
3364 memset (splt->contents, 0, PLT_ENTRY_SIZE);
3365 bfd_put_32 (output_bfd, (bfd_vma) 0x80000000 /* nop. */,
3366 splt->contents + splt->size - 4);
3369 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
3372 /* Set the first entry in the global offset table to the address of
3373 the dynamic section. */
3374 sgot = htab->elf.sgotplt;
3375 if (sgot && sgot->size > 0)
3378 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3380 bfd_put_32 (output_bfd,
3381 sdyn->output_section->vma + sdyn->output_offset,
3383 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3386 if (htab->elf.sgot && htab->elf.sgot->size > 0)
3387 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
3392 /* Hook called by the linker routine which adds symbols from an object
3393 file. We use it to put .comm items in .sbss, and not .bss. */
3396 microblaze_elf_add_symbol_hook (bfd *abfd,
3397 struct bfd_link_info *info,
3398 Elf_Internal_Sym *sym,
3399 const char **namep ATTRIBUTE_UNUSED,
3400 flagword *flagsp ATTRIBUTE_UNUSED,
3404 if (sym->st_shndx == SHN_COMMON
3405 && !bfd_link_relocatable (info)
3406 && sym->st_size <= elf_gp_size (abfd))
3408 /* Common symbols less than or equal to -G nn bytes are automatically
3410 *secp = bfd_make_section_old_way (abfd, ".sbss");
3412 || ! bfd_set_section_flags (abfd, *secp, SEC_IS_COMMON))
3415 *valp = sym->st_size;
3421 #define TARGET_LITTLE_SYM microblaze_elf32_le_vec
3422 #define TARGET_LITTLE_NAME "elf32-microblazeel"
3424 #define TARGET_BIG_SYM microblaze_elf32_vec
3425 #define TARGET_BIG_NAME "elf32-microblaze"
3427 #define ELF_ARCH bfd_arch_microblaze
3428 #define ELF_TARGET_ID MICROBLAZE_ELF_DATA
3429 #define ELF_MACHINE_CODE EM_MICROBLAZE
3430 #define ELF_MACHINE_ALT1 EM_MICROBLAZE_OLD
3431 #define ELF_MAXPAGESIZE 0x1000
3432 #define elf_info_to_howto microblaze_elf_info_to_howto
3433 #define elf_info_to_howto_rel NULL
3435 #define bfd_elf32_bfd_reloc_type_lookup microblaze_elf_reloc_type_lookup
3436 #define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name
3437 #define elf_backend_relocate_section microblaze_elf_relocate_section
3438 #define bfd_elf32_bfd_relax_section microblaze_elf_relax_section
3439 #define bfd_elf32_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
3440 #define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup
3442 #define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook
3443 #define elf_backend_check_relocs microblaze_elf_check_relocs
3444 #define elf_backend_copy_indirect_symbol microblaze_elf_copy_indirect_symbol
3445 #define bfd_elf32_bfd_link_hash_table_create microblaze_elf_link_hash_table_create
3446 #define elf_backend_can_gc_sections 1
3447 #define elf_backend_can_refcount 1
3448 #define elf_backend_want_got_plt 1
3449 #define elf_backend_plt_readonly 1
3450 #define elf_backend_got_header_size 12
3451 #define elf_backend_want_dynrelro 1
3452 #define elf_backend_rela_normal 1
3453 #define elf_backend_dtrel_excludes_plt 1
3455 #define elf_backend_adjust_dynamic_symbol microblaze_elf_adjust_dynamic_symbol
3456 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3457 #define elf_backend_finish_dynamic_sections microblaze_elf_finish_dynamic_sections
3458 #define elf_backend_finish_dynamic_symbol microblaze_elf_finish_dynamic_symbol
3459 #define elf_backend_size_dynamic_sections microblaze_elf_size_dynamic_sections
3460 #define elf_backend_add_symbol_hook microblaze_elf_add_symbol_hook
3462 #include "elf32-target.h"